Question What is RxDiag?

[Nuplar]

I went to shutdown my PC and it said I had a background app that was stopping my from shutting down. It said RxDiag message pump or something like that. I just wanted to know what this was in case it was someting bad. Thanks

 

[Aeacus]

Looks fine to me,
further reading: https://www.freefixer.com/library/file/rxdiag.dll-296012/

And 2nd link too, where RxDiag is discussed a bit,
link: https://www.nvidia.com/en-us/geforce/forums/geforce-graphics-cards/5/309954/rxdiag-message/